{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Lee S"],"funding":["National Research Foundation of Korea (NRF)"],"pagination":["1185"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9715538"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["5(1)"],"pubmed_abstract":["Streamlining a body is a major adaptation for aquatic animals to move efficiently in the water. Whereas diving birds are well known to have streamlined bodies, such body shapes have not been documented in non-avian dinosaurs. It is primarily because most known non-avian theropods are terrestrial, barring a few exceptions. However, clear evidence of streamlined bodies is absent even in the purported semiaquatic groups. Here we report a new theropod, Natovenator polydontus gen. et sp. nov., from the Upper Cretaceous of Mongolia. The new specimen includes a well-preserved skeleton with several articulated dorsal ribs that are posterolaterally oriented to streamline the body as in diving birds. Additionally, the widely arched proximal rib shafts reflect a dorsoventrally compressed ribcage like aquatic reptiles. Its body shape suggests that Natovenator was a potentially capable swimming predator, and the streamlined body evolved independently in separate lineages of theropod dinosaurs."],"journal":["Communications biology"],"pubmed_title":["A non-avian dinosaur with a streamlined body exhibits potential adaptations for swimming."],"pmcid":["PMC9715538"],"funding_grant_id":["2022R1I1A2060919","2022R1A6A3A01085883"],"pubmed_authors":["Lee S","Tsogtbaatar K","Kim SH","Sissons R","Park JY","Lee YN","Currie PJ","Barsbold R"],"additional_accession":[]},"is_claimable":false,"name":"A non-avian dinosaur with a streamlined body exhibits potential adaptations for swimming.","description":"Streamlining a body is a major adaptation for aquatic animals to move efficiently in the water. Whereas diving birds are well known to have streamlined bodies, such body shapes have not been documented in non-avian dinosaurs. It is primarily because most known non-avian theropods are terrestrial, barring a few exceptions. However, clear evidence of streamlined bodies is absent even in the purported semiaquatic groups. Here we report a new theropod, Natovenator polydontus gen. et sp. nov., from the Upper Cretaceous of Mongolia. The new specimen includes a well-preserved skeleton with several articulated dorsal ribs that are posterolaterally oriented to streamline the body as in diving birds. Additionally, the widely arched proximal rib shafts reflect a dorsoventrally compressed ribcage like aquatic reptiles. Its body shape suggests that Natovenator was a potentially capable swimming predator, and the streamlined body evolved independently in separate lineages of theropod dinosaurs.","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Dec","modification":"2025-04-26T12:43:12.48Z","creation":"2025-04-06T14:00:29.661Z"},"accession":"S-EPMC9715538","cross_references":{"pubmed":["36456823"],"doi":["10.1038/s42003-022-04119-9"]}}